Winner of the Best Documentary of Sundance and Pusang Film Festivals, Old Partner captures a touching and close relationship between an elderly farmer Choi and his old cow. Choi suffered from poliomyelitis as a child; with an atrophied leg it has always been difficult for him to even walk without a cane. For 30 years, the ox pulled a cart which Choi used as transportation to and from the farm, and helped him to plough the farm even when he was too frail to walk. The pair was like father and son, their vigorous bond was developed through life-long companionship. Even though the old cow can't help him as before, the cow is still his best helper and best friend. One day, a doctor diagnoses the cow with cancer, and they only have one year left together...